Device for preventing smearing.



PATENTED DEC. 15, 1903.

o. ROBSBN. DEVICE PGR; PRBVBNTING SMBARING.

APELIGATIUN FIILED JUNE l. NGL

2 SHEBTS-SHEET 1.

N0 MDDBL.

LIU

,Tillll No. 746,746. PATENTBD DEG. 15,1903;

0. RUESBN.

DEVICE FOR PRBVBNTING SMBAMNG.

APPLIGATION FILED .TUNE l. 1901.

No MODEL Z SHEETS-SHEET Z.

Invertia?" UNITED STATES v:Patented December 15, 1903.

OSCAR ROESEN, OF NEW-YORK, N. Y.,

AssIcNo'R To ROBERT HOE, OE NEW YORK, N. Y.

DEVICE FOR PREVENTING SIVIEIUNG.k

SPECIFICATION formingpar't of Letters Patent N o. 746,746, datedDecember 15, 1903.

Application inea June 1, 1to1'.

.To all whom it may concern:

Be it knownthat I, OSCAR ROESEN, acitizen of the United States, residingat New York, county of New York, and State of New York,

5 have invented certain new and useful Improvements in Devices forPreventing Smearing, fully described and representedin the followingspecication and the accompanying drawings, forming a part of the same.

This invention relates to certain improvements in devices for preventingoffset and smearing in printing-machines. 'Y

In printing-machines, and more especially in machines which print uponwebs, station- I5 ary guides are employed for the purpose of supportingthe traveling web and for giving it direction.. When a traveling webwhich has been freshly printed passes over such a stationary guide, itis liable to become smeared, especially where, as in many instances, theweb carries heavily-printed cuts. The difficulty referred to frequentlyoccurs in forwarding webs where the webs are caused to pass around angleor turner bars for the z5 purpose of changing the direction ofAmovement. In such cases the web is strained around the bar, and itsfreshly-painted surface, especially where this surface, as has beenbefore stated, is composed in whole or in part of heavily-inked cuts, isaptY to become rubbed or smeared, and, furthermore, any ink which isrubbed o onto the bar will set off onto the succeeding portions vof theweb.

The invention has for its object to produce an improved means wherebywebs may be led over stationary guideswithout becoming smeared orwithout liability of offset.

With this and lother objects in view the invention consists in certainconstructions and in certain part-s, improvements, and com-r. binations,as will be hereinafter fully de-- Serial No. 62,729. (No model.)

being shown in section, the view being taken iin the direction indicatedby the arrow 2 in Fig. l. Fig. 3 is a front view of the constructionshown in Fig. 1,' the View being taken in 55 the direction of the arrow3 in that figure. Figs. and 5 are detail sectionalviews illustrating amodified construction.

Referring to the drawings, l indicates portions Of the side frames ofaprinting-machine, 6o which frame may be of any approved construction.These side frames are connected by cross-'webs or brace-bars V2 and 3.In the present. machine the printed product consists of a perfecteddouble wide web the columns of which are at right angles to the generaldirection of movement of the web. This web may be printed upon byprinting-couples of any approved type; but since the construction ofthese couples has no relation to 7o the present invention they are notshown. The web after leaving the printing-couples is led over a .guide4, which is or may be a compensating roll of the usual type. Afterleaving the compensating roll the web passes over a slitting-roll 5,'where it is divided into two sections A and B by means of a slitter 6of any ordinary construction. After leaving the slitting-roll theportion A of the web is led forward and' over a stationary 8o guide 7,which inn the present instance is a turner-bar, by which the web isgiven a direction at right angles to the line of move-l ment it had whenit lefty the slitter. The portion B of the web after 'leaving theslitter 85 is led under a roll 8 and-then forward to .a :stationaryguide 9, which Vin the present instance is a turner-bar, by which thedirection of the web is changed, so that it runs beneath the portion Ain order that it may 9o be associated therewith. The portion A of ytheweb is led over a suitable guide-roll l() to a cutting and foldingmechanism Il, and the portion B is led over a roll 12 to the samecutting and folding mechanism, the two portions being associated by thismechanism. y

In order to prevent-smearing and offsetting as the web passes over theguides 7 and 9,- which, as before stated, are turner-bars, a movingshield is employed. This moving mo shield may be constructed andoperated in various ways. In the preferred form of the sns constructionthe shield consists of a belt, which may be formed of any suitablematerial,said shield passingbetween the stationary web-guides and thetraveling web and being caused to move at a rate of speed substantiallyequal to the speed of the web. While an independent shield might beprovided for each Web-guide, in the preferred form of the constructionthe belt which forms the shield will be endless, a single belt beingutilized to form the shield for both guides.

The belt which forms the shield may be arranged and driven in anysuitable manner. In the construction shown, however, the belt 13, whichforms the shield and which is substantially equal in width to theprinted matter ou one of the sections A B, meets the web as the webpasses over the slitting-roll 5, said belt passing between theslitting-roll and the web. After leaving the slitting-roll the belt runsforward beneath the web and passes around the guide 7 and' between saidguide and the web. After leaving the guide 7 the belt passes over anglebars 14 15, which change its direction, as clearly indicated in Fig. 1.After leaving the angle-bar 15 the belt passes over and around a roll 16and between this roll and a roll 17. After leaving the roll 17 it passesonward to a guide 18, which is located over the section B of the web andwhich changes the direction of movement of the belt, as clearlyindicated in Fig. 1. After leaving the guide 18 the belt passes onwardand around the guide 9, being interposed between this guide and thesection B of the web. The belt follows the run of this section untilboth reach the roll 12, before referred to as the roll over which thissection passes to the cutting and folding mechanism, after which thebelt takes a turn backward around the roll 12 and passes over aturnerbar 19. This turner-bar 19 is located in the construction shownunder the bar 7 and operates to turn the belt so that it runs back to aroll 20, which is preferably a driven roll, as will hereinafter appear.s

The slitting-roll 5 will preferably be driven as is usual. The means bywhich this roll is driven may be of any preferred type. As shown, a gear21 is provided, which is mounted on a suitable stud on one of the sideframepieces and which is driven from any suitable moving part of themachine by any suitable train of gears or other connection's. This gear21 meshes with an intermediate 22, also mounted on the frame of themachine, and this intermediate is in mesh with a small gear 23, which ismounted on the shaft 8' of the roll 8, this gear being also located onthe outsideoftheframe. TheshaftSisprovided on the inside of the framewith a gear 24, which meshes with a gear 25 on the shaft 5 of theslitter-roll.

The shield may be driven by any suitable arrangementofdrivingmechanism.Asshown, the rolls 16 and 17, over and between which the belt passes,are driven rolls. While the movement of these rolls may be derived fromany suitable moving part of the machine, as shown, the shaft 8 isprovided with a bevelgear 26, which meshes with a similar gear 27 on ashort shaft 28, journaled in the crossbrace 2, before referred to. Theother end of this short shaft 28 carries a gear 29, which mesheswithagear 30on theshaftoftherolll7, said shaft having its bearings incross-braces 2 and 3. The shaft of the roll 16 is provided with a gear31, which meshes with the gear 30, said shaft also finding its bearingsin the cross-braces 2 and 3.

While the rolls 16 and 17 may be depended upon to give the belt itsmovement, in the construction shown the shaft which carries the roll 20,before referred to, is also preferably provided with a gear 33, saidgear meshing with an intermediate 34, which is driven from the gear 25on the shaft 5.

Inasmuch as the belt which forms the shield travels when in contact withthe printed web at the same rate as the web, there is little liabilityof oset; but should some ink be set off onto the belt it will have anopportunity to dry between the times when the belt leaves the firstportion of the web and comes in contact with the second portion.

In the construction shown in the figures so far described the belt has aplain surface, so that its entire surface may come in contact with thepaper. If desired, however, ribs, which may be in the form of tapes 35,(see Figs. 4 and 5,) may be formed on the belt, so that the majorportion of the belt will not come in contact with the web.

While the construction which has been described forms a preferredembodiment of the invention, it is to be understood that the inventionis not to be confined thereto, but that various changes andmodifications may be made therein without departing therefrom.

What is claimed is- 1. The combination with an angle-bar forming astationary web-guide which changes the direction of movement of the web,of a shield interposed between the web and the guide, and means fordriving the shield, substantially as described.

2. The combination with a plurality of angle-bars forming guides for aweb or webs, of an endless belt passing around the bars, said belt beinginterposed between the web and the bars and forming a shield, and meansfor driving the belt, substantially as described.

3. The combination with a slitting mechanism, of angle-bars for guidingparts of the slit web, an endless traveling belt forming a shield andpassing between the bars and the web, means for supporting and guidingthe belt, driving-rolls for the belt, and means for operating the rolls,substantially as described.

4. The combination with means for forwarding a plurality of webs, ofangle-bars for changing the direction of movement of the webs, anendless belt forming a shield pass- IOO IOR u IIO ing around the barsand between the bars and the webs, guides for controlling the movementofthe belt,and driven rolls around which the belt passes, substantiallyas described. A

5. The combination with a stationary webguide, of a shield interposedbetween the web and the guide, said shield consisting of a belt having aplurality of ribs on its operating-surface, and means for driving theshield, substantially as described.

6. The combination with a stationary webguide, of ashield interposedbetween the web and the guide, said shield consisting of an endless belthaving a plurality of ribs on its operating-surface, and means fordriving the shield, substantially as described.

7. The combination with an angle-bar, arranged to form a guide for a webor Webs, of an endless belt passing around Vthe bar and between the barand the web or webs, said belt having a plurality of ribs on itsoperating-surface, and means for driving the belt, substantially asdescribed.

8. 4The combination with means for forwardinga plurality of Webs,'ofangle-bars for changing the direction of movement of the Webs, a pair ofdriven rolls, an endless belt driven by the rolls, said belt passingbetween the angle-bars and the webs, and a plurality of guides, saidguides including suitably-arranged angle-bars for controlling themovement of the belt, substantially as described.

ln testimony whereof I have hereunto set my hand in the presence of twosubscribing witnesses.

OSCAR ROESEN. Witnesses:

GEO. M. BROWN, f WILLMMKOERNER.

